﻿using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Winform_test_001
{
    public class DbHelper
    { 
        private static  string conString = "server=.;database=sql;uid=sa;pwd=123456";
        public static DataTable GetDataTable(string sql)
        {

           



            SqlConnection connection = new SqlConnection(conString);


            SqlDataAdapter adapter = new SqlDataAdapter(sql, connection);

            DataTable dt = new DataTable();

            connection.Open();

            adapter.Fill(dt);
            

            

            return dt;
        }
        public static int AddOrUpdate(string sql)
        {
            SqlConnection connection = new SqlConnection(conString);
            SqlCommand command = new SqlCommand(sql, connection);
           
            connection.Open();
           
            return command.ExecuteNonQuery();
        }

      
    }
}
